2026 PM2.5 Exceedances
(Through July 16, 2026)
Below are the exceedances of the 35 µg/m3 24-hour average PM2.5 standard and the dates they occurred for each continuous PM2.5 monitor in New England. Data from these monitors are not used for official purposes such as determining if an area meets the PM2.5 standard. All data are preliminary and subject to change.
On this page:
Connecticut
| Monitor Location | Concentration (µg/m3) | Date/AQI Map |
|---|---|---|
| Bridgeport | 68.8 | July 16, 2026 PM 2.5 AQI Map |
| Cornwall | 52.6 | |
| Danbury | 69.5 | |
| East Hartford | 45.3 | |
| Groton | 54.2 | |
| Hartford | 51.1 | |
| New Haven | 58.9 | |
| Waterbury | 64.9 |
Maine
| Monitor Location | Concentration (µg/m3) | Date/AQI Map |
|---|---|---|
| Madawaska | 44 | July 2, 2026 PM 2.5 AQI Map |
Massachusetts
| Monitor Location | Concentration (µg/m3) | Date/AQI Map |
|---|---|---|
| Pittsfield | 37.5 | July 16, 2026 PM 2.5 AQI Map |
New Hampshire
| Monitor Location | Concentration (µg/m3) | Date/AQI Map |
|---|---|---|
| Miller State Park | 38.6 | July 15, 2026 PM 2.5 AQI Map |
Rhode Island
| Monitor Location | Concentration (µg/m3) | Date/AQI Map |
|---|---|---|
Vermont
| Monitor Location | Concentration (µg/m3) | Date/AQI Map |
|---|---|---|